关于修改zeppelin的代码显示

最近我在修改zeppelin(0.7版本)的源码相关的知识，目前做的工作是修改zeppelin的代码,为了让zeppelin可以可以在页面中显示数据集，并且在其数据库中存储式真实的路径1.如果我们要运行paragraph的代码的时候,我们要修改

我们要修改NotebookServer.setParagraphUsingMessage(Note note, Message fromMessage, String paragraphId, String text, String title, Map<String, Object> params, Map<String, Object> config)方法，
目的让你在zeppelin上面写数据集但是存储在zeppelin的代码里面是真实路径
代码：

Paragraph p = note.getParagraph(paragraphId);
//修改text的值
if(text != null){
if(text.contains("#mydata")){
text = text.replaceAll("#mydata","/tmp/xjdx.txt");
}
}
p.setText(text);
p.setTitle(title);
AuthenticationInfo subject =
new AuthenticationInfo(fromMessage.principal, fromMessage.ticket);
p.setAuthenticationInfo(subject);
p.settings.setParams(params);
p.setConfig(config);

return p;

-----------------------------------------------------------

修改页面或者换其他的notebook

private void updateParagraph(NotebookSocket conn, HashSet<String> userAndRoles,
Notebook notebook, Message fromMessage) throws IOException {
LOG.info("----------------------------------updateParagraph-------------------------------");
String paragraphId = (String) fromMessage.get("id");
if (paragraphId == null) {
return;
}

Map<String, Object> params = (Map<String, Object>) fromMessage.get("params");
Map<String, Object> config = (Map<String, Object>) fromMessage.get("config");
String noteId = getOpenNoteId(conn);
final Note note = notebook.getNote(noteId);
NotebookAuthorization notebookAuthorization = notebook.getNotebookAuthorization();
AuthenticationInfo subject = new AuthenticationInfo(fromMessage.principal);
if (!notebookAuthorization.isWriter(noteId, userAndRoles)) {
permissionError(conn, "write", fromMessage.principal, userAndRoles,
notebookAuthorization.getWriters(noteId));
return;
}

Paragraph p = note.getParagraph(paragraphId);

if (note.isPersonalizedMode()) {
p = p.getUserParagraphMap().get(subject.getUser());
}

p.settings.setParams(params);
p.setConfig(config);
p.setTitle((String) fromMessage.get("title"));

// p.setText((String) fromMessage.get("paragraph"));
//修改text的值
String myText = (String) fromMessage.get("paragraph");
if(myText != null){
if(myText.contains("#mydata")){
myText = myText.replaceAll("#mydata","/tmp/xjdx.txt");
}
}
p.setText(myText);

note.persist(subject);

if (note.isPersonalizedMode()) {
Map<String, Paragraph> userParagraphMap =
note.getParagraph(paragraphId).getUserParagraphMap();
broadcastParagraphs(userParagraphMap, p);
} else {
broadcastParagraph(note, p);
}
}

------------------------------------------------------------

整体刷新页面或者是换notebook的显示模式

private void sendNote(NotebookSocket conn, HashSet<String> userAndRoles, Notebook notebook,
Message fromMessage) throws IOException {

LOG.info("New operation from {} : {} : {} : {} : {}", conn.getRequest().getRemoteAddr(),
conn.getRequest().getRemotePort(), fromMessage.principal, fromMessage.op,
fromMessage.get("id"));

String noteId = (String) fromMessage.get("id");
if (noteId == null) {
return;
}

String user = fromMessage.principal;

Note note = notebook.getNote(noteId);
NotebookAuthorization notebookAuthorization = notebook.getNotebookAuthorization();
if (note != null) {
if (!notebookAuthorization.isReader(noteId, userAndRoles)) {
permissionError(conn, "read", fromMessage.principal, userAndRoles,
notebookAuthorization.getReaders(noteId));
return;
}
addConnectionToNote(note.getId(), conn);

if (note.isPersonalizedMode()) {
note = note.getUserNote(user);
}

 

String msg2 = serializeMessage(new Message(OP.NOTE).put("note", note));
Message message2 = deserializeMessage(msg2);

Map note2 = message2.getType("note");
if (note2 != null) {
List<Map> paragraphs2 = (List<Map>)note2.get("paragraphs");
for (Map m : paragraphs2) {
String text2 = (String)m.get("text");
if(text2 != null){
if(text2.contains("/tmp/xjdx.txt")){
text2 = text2.replaceAll("/tmp/xjdx.txt","#mydata");
}
}
m.put("text", text2);
}
}
conn.send(serializeMessage(message2));
sendAllAngularObjects(note, user, conn);
} else {
conn.send(serializeMessage(new Message(OP.NOTE).put("note", null)));
}
}

------------------------------------------------------

旁边的一些辅助功能以及run后面的访问流程,例如copy以及showline的方法

public void broadcastParagraph(Note note, Paragraph p) {
Paragraph p2 = p;
if (p.settings != null) {
//clone（）方法
p2 = p.cloneParagraphForUser(p.getId());

String text = p2.getText();
if (text != null) {
if (text.contains("/tmp/xjdx.txt")) {
text = text.replaceAll("/tmp/xjdx.txt", "#mydata");
p2.setText(text);
}
}
}
if (note.isPersonalizedMode()) {
broadcastParagraphs(p.getUserParagraphMap(), p2);
} else {
broadcast(note.getId(), new Message(OP.PARAGRAPH).put("paragraph", p2));
}
}